Pfff, after hours of struggling I finally got it up and running, only to discover that there's a serious bug crashing it instantly. It is audio related because as soon as the Mars officer telling me "all new arrivals need to check in at reception" will start his sentence, it crashes.

I don't have this problem with my own HD version (sikkmod + all textures packs).

For those interested: as a graphics ***** and all-time DooM fan I have taken my time (several weeks and playthroughs) to perfect settings for Sikkmod. Drop me a message. My Youtube account name is KickrAzz.